[heap] Fix verification of unsafe object layout changes.

test/cctest/test-mementos.cc

Index: test/cctest/test-mementos.cc
diff --git a/test/cctest/test-mementos.cc b/test/cctest/test-mementos.cc
index 6d44f33ce689f2b1f146305a2763f6b8b134e44d..af480877e2bcae3d90bdf616ac7854173c0557f2 100644
--- a/test/cctest/test-mementos.cc
+++ b/test/cctest/test-mementos.cc
@@ -57,7 +57,8 @@ static void SetUpNewSpaceWithPoisonedMementoAtTop() {
   // site pointer.
   AllocationMemento* memento =
       reinterpret_cast<AllocationMemento*>(new_space->top() + kHeapObjectTag);
-  memento->set_map_no_write_barrier(heap->allocation_memento_map());
+  memento->set_map_after_allocation(heap->allocation_memento_map(),
+                                    SKIP_WRITE_BARRIER);
   memento->set_allocation_site(
       reinterpret_cast<AllocationSite*>(kHeapObjectTag), SKIP_WRITE_BARRIER);
 }